Re: [Boost-users] serialization, 1.34/1.35 difference: serializing a vector

From: Robert Ramey (ramey_at_[hidden])
Date: 2008-04-02 21:30:01

Hmm  I don't recal where that might have come from.  Open a TRAK item.

Robert Ramey
"Filip Peters" <filippeters_at_[hidden]> wrote in message 
news:859190.51711.qm_at_web30705.mail.mud.yahoo.com...
I just tried serializing a simple vector,
std::vector<unsigned int> vectortest;

If I serialize out in 1.34, I can't read it in in 1.35.
xml result from 1.35:
<vectortest>
    <count>3</count>
    <item>1</item>
    <item>2</item>
    <item>3</item>
</vectortest>

from 1.34:
<vectortest>
    <count>3</count>
    <item_version>0</item_version>
    <item>1</item>
 &n bsp;  <item>2</item>
    <item>3</item>
</vectortest>

Notice the item_version, this causes an exception when reading it in with 
1.35....
I need a way to get the behavior from 1.34 back....
Otherwise my files aren't readable anymore.

small testprogram:

#include <boost/config.hpp>

#include <boost/archive/xml_oarchive.hpp>
#include <boost/archive/xml_iarchive.hpp>
//#include <boost/archive/binary_iarchive.hpp>
//#include <boost/archive/binary_oarchive.hpp>

#include <boost/serialization/vector.hpp>
#include <boost/serialization/export.hpp>

#include <fstream>
#include <iomanip>

int _tmain(int argc, _TCHAR* argv[])
{

    std::vector<unsigned int> testvector;
    testvector.push_back(1.);
    testvector.push_back (2.);
    testvector.push_back(3.);

//this in 1.34
        std::ofstream ofs( "testing2.txt", std::ios::binary ) ;
        boost::archive::xml_oarchive oa(ofs);
        oa << boost::serialization::make_nvp("vectortest", testvector);
        ofs.close();

//do this in 1.35
    try{
        std::ifstream ofs( "testing2.txt", std::ios::binary ) ;
         boost::archive::xml_iarchive ia(ofs);
         ia >> boost::serialization::make_nvp("vectortest", testvector2);
        ofs.close();
    }
    catch(boost::archi ve::archive_exception testexception){
    //reading a file from 1.34, will end up here
        std::string error = testexception.what();
    }

return 0;
}

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